package servlet;

import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import bean.ConnectMySql;

/**
 * Servlet implementation class addNum
 */
@WebServlet("/addNum")
public class addNum extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public addNum() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		String cartId=request.getParameter("cartId");
		String q=request.getParameter("quantity");
		int quantity=Integer.valueOf(q);
		try {
			  PreparedStatement st1=null;
			  ResultSet rs = null;
		      Connection con1=ConnectMySql.getConnection();
		      st1=con1.prepareStatement("update cart set quantity=? where cartId=?");
		      quantity++;
		      st1.setInt(1,quantity);
		      st1.setInt(2,Integer.valueOf(cartId));
		      st1.executeUpdate();
	          ConnectMySql.closeStatement(st1);
	  		  ConnectMySql.closeConnection(con1);
			}catch(SQLException e) {
				e.printStackTrace();
		}
		response.sendRedirect("cart.jsp");
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}
